Pictures of the day: 28 May 2016

A boy observes Giganotosaurus Chester Zoo exhibition of robotic dinosaurs, Chester. A huge carnivore that would have roamed the UK and one of the largest dinosaurs that ever lived are among a set of new arrivals at Chester Zoo - as keepers get ready to turn back the clock more than 250 million years. Twenty-three life-like robotic dinosaurs have stomped into the zoo for a new exhibition